Panel Mount Block Metric Anodized Aluminum Silver Fastener Thread Size 8 mm Compatible Brand and Series 40 Series 80/20 Includes Fasteners Yes Number of Mounting Holes 1 Mounting Hole Diameter 6 mm Overall Height 31 11/64 mm Overall Length 34 5/16 mm Overall Width 26 13/64 mm For Slot Width 8.2 mm 40 Series Compatible Manufacturer Model Number 13-8316 Includes Slide-in Economy T-Nut with Centered Thread Socket Head Cap Screw